AMD 7770 CrossfireX

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Iron Ash

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Oct 7, 2014
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I have a AMD 7770 and it claims to be Crossfire X compatible. What would be entitled to use this feature other than buying a second card?

This is the main system specs of my computer:

1 x Processor AMD A10-5800K APU (4x 3.80GHz/4MB L2 Cache)
1 x Motherboard ASRock FM2A75 Pro4 -- 2x PCIe x16, 6x USB 3.0, 2x USB 2.0
1 x Memory 8 GB [4 GB x2] DDR3-1600 Memory Module - Corsair or Major Brand
1 x Video Card AMD Radeon HD 7770 - 1GB - Single Card
1 x Power Supply 400 Watt - Standard
 
Solution
pierrerock
It would be a very bad idea as your second PCIE lane run @ X4 not X16 which mean big performance loss. I would recommend a better GPU than a 7770 (R7 260x) instead of getting a pair of these. but you would need a new PSU as well since a better GPU would require a 6pin cable from your PSU and thus more power than 400 W.

either way a new PSU would be needed.
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sadams04

sadams04

Splendid
Nov 23, 2010
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Runnign Crossfire with your A10 would be with an HD 6670 so even if you could get it to work the HD 7770 would "scale down". Your best option here is to install the HD 7770 and stop using the built-in graphics of the A10. The HD 7770 would be a pretty big step up from where you are today.
 
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pierrerock

pierrerock

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Jul 4, 2014
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It would be a very bad idea as your second PCIE lane run @ X4 not X16 which mean big performance loss. I would recommend a better GPU than a 7770 (R7 260x) instead of getting a pair of these. but you would need a new PSU as well since a better GPU would require a 6pin cable from your PSU and thus more power than 400 W.

either way a new PSU would be needed.
 
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